In the 30 years since Open University was established, an important lesson has been learned by people.
在开放式大学成立后的30年里,人们得到了一条重要的经验。
Her children have learned an important lesson witnessing their mother earn her degree.
她的孩子们在见证母亲获得学位的过程中也学到了重要的一课。
The story of the Apple Newton can teach us an important lesson about failure.
苹果牛顿的故事告诉我们一个与失败有关的重要道理。
General Grant was beginning to learn an important lesson of the war.
VOA: special.2009.11.26
Now, this is an important lesson in what you do in science.
现在是你们科学教育中,的重要一课。
Why are we doing this? Because there's an important lesson here.
为什么要学这些,因为有个重要结论
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